Photographic-printing cabinet.



No. 832,141. PATENTED OCT. 2, 190a. W. J. MADDOX. PHOTOGRAPHIG PRINTING CABINET.

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UNITED STATES PATENT OFFICE.

WILLIAM J. MADDOX, OF J AMESTOWN, NEW YORK, ASSIGNOR TO AMERICAN ARISTOTYPE COMPANY, OF J AMESTOlVN, NEW YORK,- A CORPORATION OF NEW YORK.

PHOTOGRAPHlC-PRINTING CABlNET.

Specification of Letters Patent.

Patented Oct. 2, 1906.

Application filed February 10, 1905. Serial No. 245.076-

To all whom, it may concern:

Be it known that '1, WILLIAM J. MAnnox, of Jamestown, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Photographic-Printing Cabinets; and I do hereby dec are the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, formo ing a part of this specification, and to -the re erence-numerals marked thereon.

My present invention relates to'the art of. printing upon sensitized papefwith'photographic or other negatives b means of articial li ht; and it has for its 0 ject to provide a stan or cabinet of comparatively small proportions, but great capacity, upon which the work is supported during exposure and all parts of who are easily accessible to the operator at all times.

Hitherto it has been difficult to securely arrange any considerable number of printing-surfaces about a single light in such a manner that all will be equally exposed dur- 2 5 ing a given interval of time and under the same conditions without great inconvenience to the manipulator. An a lioation of my invention embodies a revolu lb globular cabinet having numerous racks upon its periph- 3 ery adapted to support removable printingframes, the faces of which are directed toward a centrally-disposed light and lie in a plane substantially at right angles to its rays; and a further object thereof is to provide an inner ends, whic 3 5 adequate, but inexpensive and lightly-constructed support therefor of the nature indicated having simple means for equilibrate adjustment.

To these and other ends the invention con- 40 sists in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification. In the drawings, Figure 1 is a perspective view of a cabinet constructed in accordance with my invention. Fig. 2 is a vertical section taken on the line a a of Fig. 1, and Fig. 3 is a horizontal section on the l' e b b of Fig. 2. Similar reference-numerals in the several figures indicate similar parts.

Reference being had to the accompanying drawings, 1 indicates a base or pedestal cornposed in this instance of intersecting crosspieces suitably joined and provided with a casting 2 of considerable depth having a circular and downwardly-tapering aperture 3 in the center thereof adapted to anchor the similarly shaped and fitted point of a vertical spindle 4, upon which the upper framework is hung in'a manner about to be described.

The upper end 5 of the spindle is conical and enters arecess in and forms a bearing for a rotatable'cap or saddle 6, having cross-channels 7 on'the top thereof and an oil-hole 8 in tl1 e eenter. for lubricating purposes. By

means ofTafdownWardIy-prO ecting flange 9 thereon ahe capgis screwed to the threaded end of a sleeve-TO the lower end of which is similarly secured to a casting 11, encircling the spindle and movable circumferentiall thereon. The spindle and sleeve pass throug a central aperture in a platform formed in this instance by cross-pieces 12, interposed between the cap and casting last spoken of and su ported b stra -iron trusses 13, which he in the channe s 7. The bolts by means of which these truss members are fastened to the platform also secure the outer "end's 'of a pluralit of radius-bars 14, their are threaded, passing through a number of downwardly-projecting lugs 15 on the casting 11 and provided with nuts by means of which they are tightened to right and stiffen the structure. The upper or main structure is supported upon the platform 12 and consists, preferably, 0 the upper and lower integral sections B and C, respectively, in the shape of regular prismatoids, each face thereof constituting a 90. rack 16, adapted to hold one or more printing-frames and having inter osed therebe tween a plurality of rectangu ar rack-frames 17, having matched abutting edges and se cured at top andbottom, bymeans of bolts 18, 5 to annular strips 19, forming the adjoining edges of the sections, so that the form of the resulting structure is that of a polyhedron having numerous faces, the advantages of which peculiar shape will be hereinafter set shown in Fig. 1. These are kept in place in the present instance by retaining-strips 21, engaging the bottom edges, and latches 22, engaging the top edges, it being particularly necessary to provide some means of this kind for those in the lower tier or section, as their normal tendency is to fall outward. The top of the cabinet maybe entirely open, or it may be provided with a relatively small aperture through which lighting devices are admitted, the latter being in this instance an electricarc lamp 23 of great briliancy hung from a cord that runs through a pulley 24 on the ceiling above and is secured to the adjoining wall, so that the lamp, while normally occupying the center of the inclosed space, may be raised when for any purposes it is desired to move the cabinet or lowered again to its former position.

The mode of operation requires no description. In setting the printing-frames upon their racks the revolving feature is of great aid in point of time and labor and all surfaces being substantially at right angles to the rays of light an e ual exposure for given length of time is a orded all. The accommodations are suited to frames varying in size, as shown, and, if desired, extra racks adapted to contain those of unusual dimensions may be provided for substitution between the sections when necessary. The peculiar shape shown is of advantage in packing for ship ment, as the upper and lower sections can be nested and arranged in regard to the remaining parts for economy of space in-a manner that will suggest itself.

I claim as my invention 1. In a photographic-printing device, the combination with a hollow framework, of an illuminating device situated centrally thereof and fixed sup orts upon the framework accessible from tie exterior thereof for exposing sensitized material with its surfaces substantially at right angles to the light-rays from the illuminating device.

2. A photographic-printing cabinet embodying a polyhedral framework substantially globular in shape and having fixed racks upon its faces for the reception of printing-frames accessible from the exterior of the cabinet.

3. A photographicrinting cabinet embodying a polyhedral amework formed of separable upper and lower integral sections and removable frames interposed therebetween forming racks for the reception of printing-frames.

4. In a photographic-printing device the combination with a polyhedral framework substantially globular in shape, and a centrally-disposed lighting device, of fixed racks upon the faces of the former accessible from the exterior of the framework for the disposition of printing-frames with their inner faces substantially at right angles to the rays of said light.

5. In a photographic-printing device, the combination with a hollow polyhedral framework having racks upon the faces thereof for the reception of printing-frames, of flanges upon the inner sides of said racks for prevcnting inward movement ofthe frames and catches for engaging the outer edges of the latter.

6. In a photographic-printing device, the combination with a suitable base, of a framework revolubly mounted thereon and holding racks accessible from the exterior of the framework, for the reception of printingframes.

7. In a photo raphidprinting device, the combination with a suitable base, of a polyhedral framework revolubly mounted thereon having a lighting device disposed centrally thereof and means upon the faces of said framework for supporting sensitized material in ex osing it to the rays.

8. In a revo uble cabinet, the combination with a pedestal having a spindle, of a saddle thereon having intersecting channels, a platform encircling the spindle and truss members lying in the channels and connected to the platform.

9. In a revoluble cabinet, the combination with a pedestal having a spindle mounted thereon and a saddle on said spindle, of a sleeve on the spindle connected to the saddle, a platform encircling the sleeve and supporting members having opposite ends secured to the platform and an intermediate portion resting on the saddle.

10. In a revoluble cabinet, the combination with a pedestal having a spindle mounted therein and a saddle on said spindle, of a sleeve on the spindle connected to the saddle at one end, a casting connected to the other end of the sleeve, a platform encircling the sleeve, supporting connections between it and the saddle and adjustable connections between said platform and the casting.

11. In a revoluble cabinet, the combination with a pedestal having a spindle mounted therein, a saddle thereon having channels, a casting below, and a sleeve connecting the saddle and casting, of a platform encircling the sleeve, truss-straps connected thereto and lying in the channels in the saddle and radius-bars extending from the lower side of the platform and secured to the casting.

WILLIANI J. MADDOX.

Witnesses:

W. D. BROADHEAD, BREWER D. PHILLIPS. 

